ASTM D1509-95(2007)
(Test Method)Standard Test Methods for Carbon Black-Heating Loss
Standard Test Methods for Carbon Black-Heating Loss
SIGNIFICANCE AND USE
In addition to determining the heating loss (primarily moisture content) of carbon black, these drying conditions are used to prepare samples prior to performing other carbon black tests.
When larger samples are prepared for other tests, use an open vessel of suitable dimensions so that the depth of the black is no more than 10 mm during conditioning.
Carbon black is hygroscopic. The amount of moisture absorbed is related to the surface area of the black and to the relative humidity, ambient temperature, and time to which the material is exposed.
SCOPE
1.1 These test methods cover the determination of the heating loss of carbon black at 125°C. This heating loss consists primarily of moisture, but other volatile materials may also be lost. These test methods are not applicable to treated carbon blacks that contain added volatile materials, if moisture loss is to be measured.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1509 − 95(Reapproved 2007)
Standard Test Methods for
Carbon Black—Heating Loss
This standard is issued under the fixed designation D1509; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Significance and Use
4.1 In addition to determining the heating loss (primarily
1.1 These test methods cover the determination of the
moisture content) of carbon black, these drying conditions are
heating loss of carbon black at 125°C. This heating loss
used to prepare samples prior to performing other carbon black
consists primarily of moisture, but other volatile materials may
tests.
also be lost. These test methods are not applicable to treated
carbon blacks that contain added volatile materials, if moisture
4.2 When larger samples are prepared for other tests, use an
loss is to be measured.
open vessel of suitable dimensions so that the depth of the
black is no more than 10 mm during conditioning.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4.3 Carbon black is hygroscopic. The amount of moisture
only.
absorbed is related to the surface area of the black and to the
relative humidity, ambient temperature, and time to which the
1.3 This standard does not purport to address all of the
material is exposed.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
Method A—Convection–Gravity Oven Method
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus
5.1 Oven, gravity-convection type, capable of temperature
2. Referenced Documents
regulation of within 61°C at 125°C and temperature unifor-
2.1 ASTM Standards:
mity within 65°C.
D1799 Practice for Carbon Black—Sampling Packaged
5.2 WeighingBottle, low-form, 30 mm in height and 60 mm
Shipments
in diameter, equipped with a ground-glass stopper.
D1900 Practice for Carbon Black—Sampling Bulk Ship-
ments
5.3 Analytical Balance, having a sensitivity of 0.1 mg.
D4483 Practice for Evaluating Precision for Test Method
5.4 Desiccator.
Standards in the Rubber and Carbon Black Manufacturing
Industries
6. Sampling
3. Summary of Test Method 6.1 Samples shall be taken in accordance with Practices
D1799 or D1900.
3.1 A carbon black sample is weighed before and after
6.1.1 Place the samples of carbon black in airtight sample
heatingfor1hat125°C.Theobserveddifferenceinmassisthe
containers.Allow the closed container to reach room tempera-
heating loss.
ture before starting the test.
7. Procedure
These test methods are under the jurisdiction of ASTM Committee D24 on
7.1 Dry the weighing bottle and the stopper, with the
Carbon Black and are the direct responsibility of Subcommittee D24.31 on
Non-Carbon Black Components of Carbon Black.
stopper removed, in the specified oven set at 125°C for 30 min.
CurrenteditionapprovedMay1,2007.PublishedJuly2007.Originallyapproved
Place the bottle and stopper in the desiccator and allow to cool
in 1957. Last previous edition approved in 2000 as D1509 – 95 (2000). DOI:
to room temperature. Weigh the bottle with stopper to the
10.1520/D1509-95R07.
nearest 0.1 mg.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.2 Weigh2gofcarbonblackintotheweighingbottletothe
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. nearest 0.1 mg.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D1509 − 95 (2007)
7.3 Place the weighing bottle, sample, and stopper in the 10.3 Convection-Gravity Oven—Test Method A—A Type 1
specified oven set at 125°C for 1 h with the stopper removed. interlaboratoryprecisionprogramwasconductedin1994.Both
repeatability and reproducibility represent short-term testing
7.4 Replace the stopper and transfer the bottle and contents
conditions. Eight laboratories tested three carbon blacks (Ma-
to the desiccator. Remove the stopper and allow to cool to
terialsA, B, and C) twice on each of two different days.Atest
room temperature. Replace the stopper on the weighing bottle
result is the value obtained from a single determination.
and reweigh to the nearest 0.1 mg.
Acceptable difference values were not measured. (See Table 1
NOTE 1—Keep the stopper on the weighing bottle when transferring to
for the individual precision results for these three carbon
and from the desiccator to prevent loss of carbon black due to air currents.
blacks, which span a broad range for heat loss.)
7.5 Repeat the procedure on a second sample.
10.3.1 Repeatability—The pooled absolute repeatability, r,
of Method A heat loss has been established as 0.070 %. Two
8. Calculation
single test results (or determinations) that differ by more than
0.070 %mustbeconsideredsuspect,thatis,tohavecomefrom
8.1 Calculatethepercentheatinglosstothenearest0.1 %as
different sample populations. Such a decision dictates that
follows:
some appropriate action be taken.
H 5 B 2 C / B 2 A 3100 (1)
@~ ! ~ !#
10.3.2 Reproducibility—The pooled absolute re
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.